.collapse-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  left: 20px;
  bottom: 10px;
  font-size: 22px;
  color: #000;
  background-color: #fff;
  box-shadow: 0 3px 6px -4px #0000001f, 0 6px 16px #00000014,
    0 9px 28px 8px #0000000d;
  transition: color 0.3s;
  width: 36px;
  height: 36px;
  line-height: 36px;
  border-radius: 50%;
  background-color: #f0efff;
  color: #7f79ff;
  z-index: 999999;
  &.active {
    transform: rotateY(-180deg);
  }
}
